<html 
xmlns="http://www.w3.org/1999/xhtml" 
xmlns:xf="http://www.w3.org/2002/xforms" 
xmlns:ev="http://www.w3.org/2001/xml-events" 
xmlns:xs="http://www.w3.org/2001/XMLSchema">
   <head>
      <title>Enter the title of your XHTML document here</title>
      <xf:model>
         <xf:instance xmlns="">
            <Data>
               <MyDate />
            </Data>
         </xf:instance>
         <xf:bind nodeset="MyDate" type="xs:date" />
      </xf:model>
   </head>
   <body>
         <xf:input ref="MyDate">
            <xf:label>Enter a date: </xf:label>
         </xf:input>
   </body>
</html>